/**
*      author: Y_Yao
*      created: 2024-12-20 22:58:18
**/

#include<bits/stdc++.h>

#define int LL
using namespace std;
using LL = long long;
const LL LLINF = 1e18;
const int INF = 0x3f3f3f3f;
const int N = 500 + 7;
int n;
string s;

void solve()
{
    cin >> n;
    cin >> s;
    s = " " + s;
    int maxs = 1,mins = n;
    int maxp = 1,minp = n;
    for(int i = 1;i <= n;i++)
    {
        if(s[i] == '.') continue;
        if(s[i] == 's')
        {
            maxs = max(maxs,i);
            mins = min(mins,i);
        }
        else
        {
            maxp = max(maxp,i);
            minp = min(minp,i);
        }
    }
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}
